Acetylene miner&#39;s lamp.



N. LLEWELLYN.

ACETYLENE MINERS LAMP. @PPucmoN FILED Dc.|a. 1916,

Patnted Aug. 21, 1917.

Simac/1g Toi-allS @ainesville`,"in l th y May encara: Bel itlnowr'i itha/'t3 1I, 'NELsoN LLEWELLYN, a cltizenlfof t ed States, residing atState fof vh/,Iisso'uri have invented new and useful improvements inAcetylene Minersy Lampsv oftiwhich: el "following is a speci-Th'is'inventio relates to improvements in acetylene lamps d moreespecially with reference'"?'to improvements in acetylene lamps' suchasnare' use dvby miners7 the object of the `invention'"being to providea iilter for 'use linthe carbid holding and generating bowl ofthelaiiipand between the threaded' nipplev of thelbowl'and the threaded capofv the 1 water supplytaliik and so constructed and"arrangedas't'lterthe gas while the "same ispassing tothe burner pipes and to alsokeeplthewaterlsupply pipe clear and cause steamto be ya plied to thethreaded connection between t e bowl and the water supply tankandtliereby prevent dust from litrom the "feed controlling valve rod 9`extends down settling in said threaded connection and interfering withthe assembling and disassembling of the lamp.

The invention consists in the construction, combination and arrangementof devices hereinafter described and claimed.

, mit.

In the accompanying drawings:

ligure 1 is avertical circular section of the bowl of an acetyleneminers lamp provided with a filter constructed and arranged inaccordance with my invention.

lFig. 2 is a detailed elevation, partly in section, of the filter.

The miners lamp here shown is of the usual construction now in commonuse and comprises the carbid holding and generating bowl 1 and the watersupply tank 2. The bowl is provided in its upperA side with the threadednipple 3 and the tank is provided at its lower side with' the threadedcap 4 for engagement with said nipple, to eifect a threaded connectionbetween-the bowl and -the tank and enable them to be separated whendesired. The usual gas dome 5 is in the upper portion of the cap underthe bottom of the tank and the burner pipe 6 leads from said dome and isprovided with the usual jet ti 7. A water feed lpipe 8 depends ottom ofthe tan The water through the pipe 8 and is arranged `in the guide tube10 which depends from the top of' the ank. The ank tube has the, usuari.

unty of Harrison andy filler opening ll'vand hinged closure 12 therefor.The hook 1'3 for attaching the lamp to thevminersV cap is lon one sideof the'tank and cap 4.` 'f

iIn accordance with my inventionv I provlde a filter 14 which ispreferably made of lsheet metal and which comprises a pan 15 .and aspout 16y which extends downwardly from the center of the pan.v lThe panis of such size that'its wall 17 lits in the nipple 3 of the bowl.Swaidwall has outstanding sheet metal lianges v18 to engage over theupper endet the nipple and between same and the opposing portion of thecap -4 s'o that the center is firmly clamped between the nipple and cap.The wall is also provided 'in its outer side with gas filtering grooves19 which establish gas connection between the bowl and the gas dome 5.

The water feed tube 8 extends throug the spout 16. The spout is tapereddownwardly and is provided with a correspondingly tapered member 20which is adjustably yitted thereon so that the length of the vspout maybe varied according to the depth of the bowl. The spout is provided withan out-struck tongue 21 and the adjustable member 20 has an opening22'through which the tongue extends. Hence the member .20 may .beadjustid as desired and the tongue when bent reversely after beingpassed through the opening 20 serves to secure the member 20 to thespout at the right adjustment.

The member 2O has a contracted opening 23at its lowerl end for thepassage of the lower end of the valve Ifod l0 and is also provided nearits lower end with `openings 24.

The gas is ltered by passin through the grooves 19 and the openingsormed between the flanges 18. The steam which lis generated while thewater is passing through the lower end of the filter spout by the heatof the moistened carbid is permitted to escape into the carbid throughthe openings 24 and from which the steam ,passes up through the lterspout into the pan ofthe Afilter and also passes up from the bowl lthrough the filtering grooves 19, together with the gas, and condenses.The flanges 18 prevent carbid dust from settling between the nipple andthe cap and binding them together.

It will be understood that the filter remains in the cap 4 when thedome'is unscrewed from the tank, the fianges 18 of the filter panengaging in the threaded loop of the cap 4.

While I have here shown and described a referred form .of my -inventionI would iiave it understood that changes may be made in the form,proportion and construction of the several parts Without-departing fromthe spirit of my invention and within the scope of the appended claims.

lHaving thus described my invention, I c aim:

1. In combination with an acetylene gas lamp comprising a carbid holdinand generating bowl having a threaded nipple at its upper side and awater. supply tank having a threaded capk on its lower side to engagewith the nipple, and also provided with adepending water feed tube and acontrollingl valve rod in said tube; a filter comprising a pan arrangedin the nipple of the bowl and having its wall spaced from the'wall ofthe nipple and provided.V with outstanding flanges to engage between thenipple and cap the said filter being further provided with filteringgrooves in the outer side of its wall and with openings between saidanges and being further provided with a depending spout in which thewater feed tube is arranged, said spout having a contraoted opening atthe lower end for the passage of the valve rod and being also providedwith steam discharge openings near its lower end.

2. In combination with an acetylene gas lamp comprising a carbid holdingand generating bowl having a threaded nipple in its upper side and awater supply tank having a threaded cap on its lower side to engage withythe nipple of the bowl and also provided with a depending water feedtube and a control valve rod in said tube; a 'filter coprising a panarranged in the nipple of the bowl and having its wall spaced from thewall of the nipple and provided with outstanding flanges -to en a/ge'between the nipple and cap, the said lilgter being further providedwith filtering grooves in; the outer side of its wall and with ppeningsbetween said anges and being u'tlewr provided with a longitudinallyadjustable depending spout in which the Water feed tube is arranged,said spout having a contracted opening at its lower end for the passageof the valve rod and being also provided with steam escape openings nearits lower end.

In testimony whereof I affix my signature.

NELSON LLEWELLYN.

